Port refactorings and formatting from pokered/pokegold/pokecrystal

[Rangi42]

• Sync labels and constants with Gen 1 or 2 as appropriate
• Newlines at end of .asm and .inc files
• Capitalize BANK, HIGH, LOW, DEF
• Colons after labels
• Remove trailing whitespace
• Indent with single tabs, not spaces
• Remove address comments
• Remove enum, use improved const
• New connection macro
• Use the current constants, data, and engine, and macros subdirectories
• Use farcall and callfar, not callab and callba
• Updated audio constants, labels, and macro names (see Update audio macros and arguments pokecrystal#650)
• More

[Rangi42]

Some chunks of code, like VBlank, clearly evolved from pokered to pokegold, with pokegold-spaceworld being somewhere in the middle. While disassembling spaceworld, it would be a good opportunity to sync pokered and pokegold. For example, AutoBgMapTransfer == UpdateBGMapBuffer, VBlankCopyDouble == Serve1bppRequest, etc. (In general Gen 1 has been getting refactored to be more like Gen 2, which would apply to conventions like "BG" instead of "Bg", but there are also pokered labels worth syncing to pokegold+pokecrystal.)